Azimkin
29d8302a4f
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- Implemented `Favorite` model with unique user-item constraint and timestamped records - Added `favorites:index` and `favorites:toggle` views with AJAX support for toggling favorites - Built templates and front-end assets for the favorites page and integration with item grids - Extended header with favorites link and dynamic counter - Added tests covering models, views, and templates for the favorites functionality - Updated admin to enable management of favorites via Django admin interface
74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
from django.contrib import messages
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from django.contrib.auth.decorators import login_required
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from django.http import HttpRequest, HttpResponse, JsonResponse
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from django.shortcuts import get_object_or_404, redirect, render
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from django.urls import reverse
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from django.utils.http import url_has_allowed_host_and_scheme
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from django.views.decorators.http import require_POST
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from favorites.models import Favorite
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from items.models import Item
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def wants_json_response(request: HttpRequest) -> bool:
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return (
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request.headers.get("x-requested-with") == "XMLHttpRequest"
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or "application/json" in request.headers.get("accept", "")
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)
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@login_required
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def index(request: HttpRequest) -> HttpResponse:
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favorite_records = (
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Favorite.objects.filter(user=request.user)
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.select_related("item__category", "item__subcategory")
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.prefetch_related("item__images")
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.order_by("-created_at", "-id")
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)
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items = [favorite.item for favorite in favorite_records]
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return render(request, "favorites/index.html", {
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"items": items,
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"favorite_count": len(items),
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"favorite_item_ids": {item.id for item in items},
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})
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@login_required
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@require_POST
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def toggle(request: HttpRequest) -> HttpResponse:
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item_id = request.POST.get("item_id")
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item = get_object_or_404(Item, pk=item_id)
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favorite = Favorite.objects.filter(user=request.user, item=item).first()
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if favorite:
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favorite.delete()
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is_favorite = False
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message = f"Товар «{item.name}» удалён из избранного."
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else:
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Favorite.objects.create(user=request.user, item=item)
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is_favorite = True
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message = f"Товар «{item.name}» добавлен в избранное."
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favorite_count = Favorite.objects.filter(user=request.user).count()
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next_url = request.POST.get("next") or reverse("favorites:index")
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if wants_json_response(request):
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return JsonResponse({
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"item_id": item.pk,
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"is_favorite": is_favorite,
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"favorite_count": favorite_count,
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"message": message,
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})
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messages.success(request, message)
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if not url_has_allowed_host_and_scheme(
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next_url,
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allowed_hosts={request.get_host()},
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require_https=request.is_secure(),
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):
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next_url = reverse("favorites:index")
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return redirect(next_url)
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